outbound_session: bring outbound connection failed debug message to info level

src/net/session/outbound_session.rs

@@ -311,7 +311,7 @@ impl Slot {
             let (addr, channel) = match self.try_connect(host.clone(), last_seen).await {
                 Ok(connect_info) => connect_info,
                 Err(err) => {
-                    debug!(
+                    info!(
                         target: "net::outbound_session::try_connect()",
                         "[P2P] Outbound slot #{} connection failed: {}",
                         slot, err